Locomotive.



110.801,101. PATENTBD JULY-z3, 190'7.v J. w. FINGH.

LOGOMOTIVE.

nrmonlon FILED 1103.0, 1900. BENEWED 000.14. 100e.

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JOHN WI'TNCH.

TTHNEYS J. W. FINGH. LOGOMOTIVB.

APPLICATION FILED. IAB.. 9, 1906. BBNEWED DBO. 24, 1908.

PATENTBD JULY 23, 1907.

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JOHN WALTER FIINCH, OF ELIZABETH, MISSISSIPPI.

LOCOMOTIVE I.Specification of Letters Patent.

Patented July 23, 1907.

Application filed Merch 9, 1906, Serial No. 305,083. Renewed December24, 1906. Serial No, 349,360.

To all whom t may concern:

Be it known ythat I, JOHN WALTER 'FINCH, a citizen ofthe United States,and a resident of Elizabeth, in the county of Washington and State ofMississippi, have .invented certain new and useful Improvements inLocomotives, of which-the following isa specification.

My invention is an improvement yin locomotives, and consists in certainnovel constructions and combinations of parts hereinafter described andclaimed.

Referring to the drawings forming a part hereof Figure l is asideelevation oi a locomotive provided with my improvement. Fig. 2 is adetail view of the reversing mechanism. Fig. 3 is a plan view of a partof the locomotive frame. Fig. 4 is a front view of the arm and pinions,and Fig. 5 is a side view of the same, partly yin section.

In the ,present embodiment of my invention the locomotive A rests uponthe frame a upon which are journaled shafts b in the usual manner, thesaid shafts v being provided upon the ends with drive wheels B.

The drive wheels B are provided at their peripheries on the outer sidesthereof with internal racks b, and upon the extended ends of the shaftsb are secured pinions b2, the saidpinions being rigid with the shaftsand with the drive wheels B.

Arms b3, are journaled upon the shafts outside the pinions, the saidarms being provided with a longitudinal slot b4 in which is slidablymounted a block b5 having journaled therein a stud shaft b to which isrigidly secured upon the inner side of the arm, a gear wheel b7 adaptedto mesh with the rack or with the pinion as may be desired.

A connecting rod b8 is rigidly connected with each of the stud shaftsupon the outer side of the arm, the said connecting rod being connectedby a link b17, with the cross-head b15, movable in guides bw, andconnected in turn to the piston rod 614 of the piston 613, movable inthe cylinder Z210.

Above the cylinder b1 is a steam chest b11 containing the usual valvemechanism b12. The valve mechanism upon each side of the locomotive isconnected by a link c1 to an upwardly projecting arm c13 of the rockshafts c7 journaled in brackets C14 upon the frame. Downwardlyprojecting arms c9 of the rock shaft c7 are provided with blocks c11upon which slides a link c5, the said link being movable upon the blockby means of the link c", connected to one arm c of the rock shaft C12journaled in brackets c13 upon the frame, and rocked by means of areverse lever C17 connected by a link o16 with the upwardly projectingarm c15 of the rock shaft. The shaft C12 is provided at approximatelythe center thereof with a Crank arm c25 connected by a rod C21", with alifting spring c274secured to the frame whereby to assist inmanipulating the reverse lever.

A supernumerary shaft C having cranked ends c provided with wrist pins cjournaled in the connecting rods ybs, is suitably ,journaled uponbracketson .the frame, the said shaft being preferably arranged betweenthe front axle and the one immediately following it, and with thecranked ends projecting beyond the vouter face of the wheels.

Upon the shaft are eccentrics off-.encircled by straps o4 connected byrods c18, with the links c5 in the -usual manner. The above describedmechanism is the usual reverse mechanism ofthe ordinary locomotive butlhaving the eccentrics for operating the valve mechanism arranged uponthe supernumerary shaft instead of vupon one of the shafts of thedriving wheel.

Any suitable `means may be provided forfmov-ing the sliding block b5 inthe slot b4, whereby to bring the gear wheel in mesh with the pinion orwith the internal rack. In Figs. 4 & 5 I have shown a form of saidmechanism comprising a setscrew Z218 .traversing a screwthreaded openingin the end of the arm and pivotally connected with the block. l

In operation when high speed is desired, the block vis moved in the slotto bringthe gear wheel into contact with `the pinion, while when lowspeed with greater power'is desired, the 'block is moved to bring thesame in mesh with the internal rack. Since the gear wheel is rigid `withthe connecting rod, it must rotate the drive wheel in the same directionwith the revolution of the connecting rod. When the gear wheel is placedin a position intermediate the rack and pinion, the driving mechanism isentirely out of engagement with the drive wheel, which may rotate freelywithout producing any wear upon the cylinder and valve mechanism.`

It will be evident from the description that a much higher speed isattained by the same consumption of fuel and without increasing thenumber of strokes of the piston.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is- 1. In a locomotive, the combination withthe frame, of shafts journaled in the frame, drive wheels secured to theshafts, pinions secured to the shafts, outside the drive Wheels,longitudinally slotted arms journaled on the shafts outside the pinions,blocks movable in the slots, set-screws traversing the arms and engagingthe blocks whereby to move the same, stud shafts journaled in theblocks, gear Wheels rigid with the stud shafts on the inner side of theblocks and adapted to engage the pinion on the drive Wheel shaft, aconnecting rod rigid with the stud shafts on the outer side of theblocks, cylinders supported on the frames, valve mechanism forcontrolling the admission of steam to the cylinders, pistons in thecylinders, connections between the pistons and the connecting rods, asupernumerary shaft journaled on the frame and provided at each end withcranked portions having wrist pins engaging the connecting rods,eccentrics on the supernumerary shaft, straps on the eccentrics, amovable link, rods connecting the ends of the link t0 the straps, aconnection between the link and the valve mechanism, and means formoving the link to control the valve mechanism.

2. In locomotives, the combination with the frame, of

shafts journaled in the frame, drive Wheels having internal rackssecured to the shafts, pinions secured to the shafts outside the drivewheels, arms journaled on the shaft outside the pinions, a blockslidably mounted on each of the arms, a stud shaft journaled in theblock, a gear wheel rigid with the stud shaft on one side of the block,a connecting rod rigid with the stud shafts on the other side of theblock, means for moving the blocks whereby to move the gear Wheel intomesh with the internal rack or the drive shaft pinion, means engagingthe connecting rods for driving the shafts, a supernumerary shaftjournaled in the frame and having cranked ends engaging the connectingrods, and reversing mechanism connected with the shaft.

3. In a locomotive, the combination with the frame, of shafts journaledon the frame, drive wheels having internal racks secured to the shafts,pinions secured to the shafts outside the drive wheels, arms journaledon the shafts outside the pinions, stud shafts slidably mounted in thearms, gear wheels rigid with the shafts on the inner ends of the arms, aconnecting rod rigid with the stud shafts on the outer side of the arms,means connected with the connecting rod for actuating said rod to rotatethe arms, and means whereby to move the stud shaft into mesh with thepinion or the internal rack.

4. In a locomotive, the combination with the frame, of shafts journaledon the frame, drive wheels secured to the shafts, arms journaled on theshafts outside the drive wheels, a rod connecting the arms upon eachside of the frame,` means on the arms for engaging the drive wheelswhereby to rotate the same, andmeans for moving said engaging meansradially to the drive shafts whereby t0 engage said Wheels at differentdistances from their center.

5. In a locomotive, the combination with the frame, of shafts journaledin the frame, drive wheels rigid with the shafts, means for driving theWheels normally out of engagement therewith, and means for actuatingsaid driving means to engage the wheels at dilferent distances from thecenter thereof.

6. In a locomotive, the combination with the frame, of shafts journaledon the frame, drive Wheels secured to the shafts, arms journaled on theshafts outside the drive wheels, a rod connecting the arms upon eachside of the frame, means on the arms fornengaging the drive wheelswhereby to rotate the same, means for moving said engaging meansradially of the shafts whereby to engage said wheels at differentdistances from their centers, cylinders having pistons connected to theconnecting rods, valve mechanism for the cylinders, a supernumeraryshaft journaled on the frame and having cranked portions engaging theconnecting rods, andmeans connected with the shaft for controlling thevalves.

7. In a locomotive, the combination with the frameof shafts journaled inthe frame, drive Wheels rigid with the shafts, means for driving thewheels normally out of engagement therewith, means for actuating saiddriving means to engage the wheels at different distances from thecenter thereof, a supernumerary shaft,` a connection between the drivingmeans and the supernumerary shaft whereby to rotate the same, cylindershaving pistons connected with said driving means, valve mechanism on thecylinders, and a connection between the supernumerary shaft and thevalve mechanism for controlling the same.

8. In a locomotive, the combination with the frame, of shafts journaledon the frame, drive wheels rigid with the shafts, means for driving thewheels normally out of engagement therewith, and means for actuatingsaid driving means to engage the wheels at different distances from thecenter thereof.

9.-In a locomotive, the combination with the frame, of shafts journaledon-the frame, drive wheels secured to the shafts, arms journaled on theshafts outside the drive wheels, a rod connecting the arms upon eachside of the frame, means on the arms for engaging the drive Wheelswhereby to rotate the same, and means for moving said engaging meansradially of the shafts whereby to engage said wheels at differentdistances from their centers.

JOHN WALTER FINCH.

Witnesses:

B. O. MCGEE, S. A. BROWN.

